Wall system and method

ABSTRACT

A multi-layer wall panel includes a core filler material surrounded by two plastic sheets. Each sheet includes three-dimensional texture formed to resemble masonry or other desired aesthetics. A layer of concrete may be disposed between each sheet and the filler material. The sheet may be removed from the concrete layers to expose the concrete surfaces. Multiple wall panels may be stacked on top of one another and joined side-by-side with posts and connectors to form a wall assembly. A method for manufacturing vertical concrete wall structures is also provided.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to thermoplastic fencing, walland building structures.

2. Description of Prior Art and Related Information

Plastic wall structures associated with the prior art include fencingassemblies having individual components. Such assemblies require aplurality of parts which are expensive to manufacture. Furthermore,assembling so many individual components is time consuming, especiallyif a large overall structure is contemplated.

Vertical concrete walls are often desirable as an inexpensivealternative to expensive stone walls composed of, granite or marble, forexample. Since they can be sculpted and colored to resemble expensivestone surfaces, concrete can often serve as a cheaper substitute for awall desired in a residential or commercial setting. Conventionalmanufacturing of concrete walls, however, consists of producing thewalls in a facility and allowing the concrete to cure in the facility.Such an approach is time consuming and inefficient since a concretemanufacturing facility is unable to operate at full capacity due to thestorage of the curing concrete.

Concrete walls can also be quite heavy and difficult to transport andmanage. What is needed is a more lightweight vertical concrete structurethat is inexpensive to manufacture.

SUMMARY OF THE INVENTION

The present invention provides structures and methods which overcome thedeficiencies in the prior art.

In one aspect, a multi-layer wall panel is provided. The panel comprisesa first plastic sheet, a second plastic sheet and a filler materialdisposed between the first plastic sheet and the second plastic sheet.The first plastic sheet has a first outer surface and a first innersurface. The first outer surface comprises a first three-dimensionaltexture. The first inner surface is substantially parallel to the firstouter surface. The second plastic sheet has a second outer surface and asecond inner surface. The second outer surface comprises a secondthree-dimensional texture. The second inner surface is substantiallyparallel to the second outer surface. The second plastic sheet isdisposed in a back-to-back relationship with the first plastic sheetsuch that the second inner surface faces the first inner surface. Thefirst plastic sheet and the second plastic sheet may each be composed ofvinyl.

The filler material may comprise a composite of polyurethane, acomposite of polyurethane and waste materials, concrete, a foam materialsuch as polystyrene, a composite of concrete and polystyrene, acomposite of concrete and waste materials, or any other materials orcomposites that is lightweight and inexpensive to manufacture.

Each of the three-dimensional textures may be formed to resemble othermasonry, other building materials, or any other aesthetically pleasingappearance as desired. For example, the three-dimensional textures maybe formed to resemble a brick pattern, pavers, a random assortment ofstones, and more.

The panel further comprises one or more side rails coupled to the firstplastic sheet and second plastic sheet. Each side rail comprises aU-channel configured to receive a post. The panel may further comprise atop rail and a bottom rail configured to mate with the top rail. Thepanel also comprises a top decorative cap covering the top rail.

The panel may also include a first concrete layer disposed between thefiller material and the first vinyl sheet as well as a second concretelayer disposed between the filler material and the second vinyl sheet.The first concrete layer may be permanently attached to, or removablefrom, the first inner surface of the first plastic sheet. The secondconcrete layer may also be permanently attached to, or removable from,the second inner surface of the second plastic sheet.

In another aspect, an outdoor wall assembly is provided. The assemblycomprises a first wall panel and a second wall panel. The first wallpanel includes a first plastic sheet and a second plastic sheet. Thefirst plastic sheet has a first outer surface and a first inner surface.The first outer surface comprises a first three-dimensional texture. Thefirst inner surface is substantially parallel to the first outersurface. The second plastic sheet has a second outer surface and asecond inner surface. The second outer surface comprises a secondthree-dimensional texture. The second inner surface is substantiallyparallel to the second outer surface. The second plastic sheet isdisposed in a back-to-back relationship with the first plastic sheetsuch that the second inner surface faces the first inner surface. Afirst filler material is disposed between the first plastic sheet andthe second plastic sheet. The first wall panel further comprises a firstbottom rail and a first top rail.

The second wall panel is disposed on top of the first wall panel. Thesecond wall panel includes a third plastic sheet and a fourth plasticsheet. The third plastic sheet has a third outer surface and a thirdinner surface. The third outer surface comprises a thirdthree-dimensional texture. The third inner surface is substantiallyparallel to the third outer surface. A fourth plastic sheet has a fourthouter surface and a fourth inner surface. The fourth outer surfacecomprises a fourth three-dimensional texture. The fourth inner surfaceis substantially parallel to the fourth outer surface. The fourthplastic sheet is disposed in a back-to-back relationship with the thirdplastic sheet such that the fourth inner surface faces the third innersurface. A second filler material is disposed between the third plasticsheet and the fourth plastic sheet. The second wall panel furthercomprises a second top rail, a second bottom rail configured to matewith the first top rail, and a first side rail.

The wall assembly further comprises a post coupled to the first siderail. The first side rail comprises a U-channel configured to receivethe post. The assembly further comprises a top decorative cap coveringthe second top rail. The first top rail and the second bottom rail areconfigured to removably mate with each other. In particular, the firsttop rail comprises a longitudinal male portion while the second bottomrail comprises a longitudinal female portion. The first filler materialand the second filler material may comprise polyurethane. The firstplastic sheet, the second plastic sheet, the third plastic sheet and thefourth plastic sheet preferably comprise vinyl.

A first concrete layer may be disposed between the first plastic sheetand the first filler material. A second concrete layer may be disposedbetween second plastic sheet and the first filler material. The secondwall panel may comprise a third concrete layer disposed between thethird plastic sheet and the second filler material as well as a fourthconcrete layer disposed between fourth plastic sheet and the secondfiller material. In such an assembly, the first filler material and thesecond filler material may be composed of a foam material, such aspolystyrene.

A method for manufacturing vertical concrete walls is also provided. Themethod comprises providing a portable mold having an inner surfacecontoured with a texture desired for an outer surface of a concretewall, pouring concrete into the portable mold, curing the concrete inthe portable mold, and removing the portable mold from the concrete. Themethod further comprises transporting the portable mold with the pouredconcrete to a destination while the concrete is curing in the portablemold.

Removing the portable mold from the concrete comprises removing theportable mold from the concrete at the destination. Pouring concreteinto the portable mold comprises pouring concrete into the portable moldat a facility. Curing the concrete in the portable mold comprises curingthe concrete in the portable mold away from the facility. A layer offoam may be attached to the concrete in the portable mold. The methodfurther comprising re-using the portable mold.

In summary, a multi-layer wall panel includes a core filler materialsurrounded by two plastic sheets. Each sheet includes three-dimensionaltexture formed to resemble masonry or other desired aesthetics. A layerof concrete may be disposed between each sheet and the filler material.The sheet may be removed from the concrete layers to expose the concretesurfaces. Multiple wall panels may be stacked on top of one another andjoined side-by-side with posts and connectors to form a wall assembly. Amethod for manufacturing vertical concrete wall structures is alsoprovided.

The invention, now having been briefly summarized, may be betterappreciated by the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, perspective view of a first preferred embodimentof a wall panel according to the invention;

FIG. 2 is a top to bottom cross-sectional view of the first preferredwall panels;

FIG. 3 is a top view of the first preferred wall panel;

FIG. 4 is an exploded, perspective view of a first preferred embodimenta wall assembly;

FIG. 5 is a cross-sectional view of a second preferred embodiment of awall panel;

FIG. 6 is a cross-sectional view of a second preferred embodiment of awall assembly comprising the wall panel shown in FIG. 5;

FIG. 7 is a top view of an alternate post;

FIG. 8 is a cross-sectional view of a stack of molds each carryingcement poured therein;

FIG. 9 illustrates a method of manufacturing vertical concrete walls;

FIG. 10 is a front elevation view of a vertical concrete wall comprisinga three-dimensional texture resembling a random stone pattern; and

FIG. 11 is a front elevation view of a vertical concrete wall comprisinga three-dimensional texture resembling rectangular tiles in a diagonalpattern.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The invention add its various embodiments can now be better understoodby turning to the following detailed description wherein illustratedembodiments are described. It is to be expressly understood that theillustrated embodiments are set forth as examples and not by way oflimitations on the invention as ultimately defined in the claims.

In FIGS. 1-3, a first preferred embodiment of a wall panel 10 isillustrated in exploded view. The wall panel 10 comprises a first outersheet 20 and a second outer sheet 22 disposed in a back-to-backrelationship. The sheets 20, 22 are preferably composed of plastic, suchas vinyl. In particular, the first sheet 20 comprises a front, outersurface 24 with a three-dimensional texture which can be made toresemble natural masonry or stone work. In the illustrated embodimentshown in FIG. 1, the three-dimensional texture resembles a brick pattern26. The sheet 20 preferably comprises a thin layer of the plasticmaterial such that an inner, the rear surface 28, shown in FIG. 2, issubstantially parallel to the outer surface 24. Accordingly, rearsurface 28 comprises an inverted brick pattern.

The second sheet 22 may be configured to be substantially similar to thestructure of the first sheet 22. Thus, the second sheet 22 comprises afront, outer surface 31 also having a three-dimensional texture, whichis shown in FIG. 1 as a brick pattern. The sheet 22 further comprises arear, inner surface 33 that is substantially parallel to the outersurface 31 and, therefore, configured with an inverted pattern of thethree dimensional texture of the outer surface 31. When assembled in theback-to-back configuration, the inner surfaces 28, 33 of the sheets 20,22, respectively, face each other.

Each sheet 20, 22 preferably comprises a top horizontal flange 35, abottom horizontal flange 37 and side hooks 39 which shall be discussedin more detail below.

In the first preferred embodiment shown in FIGS. 1-2, a filler material42 is disposed between the outer sheets 20, 22. The filler material 42may comprise any lightweight yet sturdy material that is inexpensive tomanufacture. As examples, the filler material 42 may comprisepolyurethane, waste materials, polystyrene foam, concrete, and/or acomposite of two or more of any of the foregoing.

The wall panel 10 is preferably configured to be modular so that thepanel 10 may be joined with other panels to form a wall assembly asdiscussed below in connection with FIG. 4. Accordingly, the panel 10comprises a top rail 44 and a bottom rail 46 configured to removablymate with each other. In the illustrated embodiment, the top rail 44comprises a longitudinal male section 48 while the bottom rail 46comprises a female section 51 although it should be expressly understoodthat the female and male sections can be interchanged with the top andbottom rails. The top rail 44 and bottom rail 46 cover the fillermaterial 42 while the top horizontal flange 35 and bottom horizontalflange 37 cover and secure portions of the top rail 44 and bottom rail46, respectively.

Side rails 53 are preferably formed as U-channels and received withinthe side hooks 39 of the sheets 20, 22. In combination with the sheets20, 22, the top rail 44 and bottom rail 46, the side rails 53 cover thefiller material 42 such that the filler material 42 is entirelyencapsulated.

In FIG. 4, a preferred embodiment of a wall assembly 60 comprises aplurality of the first preferred wall panels 10 a, 10 b. In theillustrated embodiment shown in FIG. 4, a top wall panel 10 a is stackedon top of a bottom wall panel 10 b. It will be appreciated that the toprail 44 of the bottom panel 10 b removably mates with a female section51 of the top panel 10 a, as shown more clearly in FIG. 3. The siderails 53 and side hooks 39 collectively form a recess to receive posts62. A top decorative cap 64 is disposed on top of the top wall panel 10a to cover the top rail 44 and form an aesthetically pleasingappearance.

It will be appreciated that the modular components described abovecollectively form a wall assembly 60 that may be easily configured toprovide an outdoor barrier that is aesthetically pleasing. The outersurfaces of the sheets may be varied at the manufacturing stage so as toprovide an endless variety of three-dimensional textures that may bedesired by the user. As an example and not by way of limitation, thethree-dimensional texture may be configured as a stone pattern. In allthe embodiments, it is contemplated that the surfaces may be colored,e.g. by painting, in order to provide as natural and/or aestheticallypleasing appearance as desired.

The ease of interconnectability of the modular panels 10 is illustratedin FIGS. 2 and 3. Thus, whether the panels 10 are being joinedside-by-side or on top-of one another, the panels 10 are configured tobe easily joined to form a wall assembly.

A second preferred embodiment of a wall panel 100 is illustrated in FIG.5. In this embodiment, the wall panel 100 comprises a first outer sheet120 and a second outer sheet 122, disposed in a back-to-backrelationship. Each panel 120, 122 is preferably composed of a plasticmaterial such as vinyl. The first sheet 120 comprises a front, outersurface 124 with a three-dimensional texture which can be made toresemble natural masonry or stone work. The sheet 120 preferablycomprises a thin layer of the plastic material such that an inner, rearsurface 128 is substantially parallel to the outer surface 124.Accordingly, the rear surface 128 comprises an inverted brick pattern.

The second sheet 122 may be configured to be substantially similar tothe structure of the first sheet 122. Thus, the second sheet 122comprises a front, outer surface 131 also having a three-dimensionaltexture. The sheet 122 further comprises a rear, inner surface 133 thatis substantially parallel to the outer surface 131 and, therefore,configured with an inverted pattern of the three dimensional texture ofthe outer surface 131. When assembled in the back-to-back configuration,the inner surfaces 128, 133 of the sheets 120, 122, respectively, faceeach other.

In the second preferred embodiment shown in FIG. 5, a core fillermaterial 142 is disposed between the outer sheets 120, 122. The corefiller material 142 may comprise any lightweight yet sturdy materialthat is inexpensive to manufacture. As examples, the filler material 142may comprise polyurethane, waste materials, polystyrene foam, concrete,and/or a composite of two or more of any of the foregoing. In theillustrated embodiment, the filler material 142 preferably comprisesfoam.

In this embodiment, a first layer 173 is disposed between the fillermaterial 142 and the first sheet 120 while a second layer 175 isdisposed between the filler material 142 and the second sheet 122. Thus,the panel 100 comprises a pair of layers 173, 175 disposed on opposingsides of the filler material 142. In the preferred embodiment, thelayers 173, 175 preferably comprise concrete, or a composite includingconcrete and other materials. Alternatively, the layers 173, 175 may becomposed of any other substantially rigid material which will providethe panel 110 with overall strength and durability to withstand outdoorconditions. The layers 173, 175 may be either detachable from, orpermanently attached to, the filler material 142.

The layers 173, 175 may be permanently attached to the sheets 120, 122,respectively, by bonding, for example. Alternatively, the sheets 120,122 may be removable from layers 173, 175 so as to expose the layers173, 175. For example, the layers 173, 175 may be composed of concretewith a certain three-dimensional texture resembling stone or any kind ofdecorative pattern. In such a case, it may be desirable to expose theconcrete layers 173, 175 which can be colored and/or painted so as toform an aesthetically pleasing structure. A side connector 182 shown inexploded view from the panel 100 has an a “I” profile and comprises twoopposing U-channels 184 configured to receive side portions 186 of thepanels 100.

FIG. 6 is a cross-sectional view of a second preferred embodiment of awall assembly 180. Instead of employing rectangular posts 71 as shown inFIG. 2, the assembly 180 employs the side connectors 182. The U-channels184 serve not only to couple one wall panel 100 to another in aside-by-side arrangement, they also serve to hold the layers 173, 175,filler material 142 and, optionally, the outer sheets 120, 122 togetherto securely form the panel 100.

In an alternative embodiment shown in FIG. 7, a side connector 188 maycomprise a single U-channel 191 with a back surface 193 that abuts theside portion 186 of the panel 100. The connector 188 may be fastened tothe concrete layers 173, 175 and/or filler material 142, shown in FIG.5, so as to hold the panel 100 together especially if the layers 173,175 are not bonded or otherwise attached to the filler material 142. TheU-channel 191 which faces away from the panel 100 now provides a recessto receive a post such as the rectangular post shown in FIG. 2. Inaddition, the panel 100 may comprise mating top and bottom railssubstantially similar to those associated with the first preferred wallpanel 10 described above and illustrated in FIGS. 1-4.

It will be appreciated that a vertical wall structure 100 is providedhaving a lightweight and inexpensive core, and sturdy concrete outerwalls which may or may not be covered by sheets of plastic material. Ifthe plastic sheets remain on the concrete walls, the sheets may becolored and/or decorated so to provide an aesthetically pleasingappearance. If not, the exposed concrete walls may be chiseled, coloredand/or otherwise configured so as to form any desired appearance such asthat resembling a stone pattern.

A preferred method of manufacturing concrete walls is illustrated inFIGS. 8 and 9. In FIG. 8, stackable molds 210 have an inner contourconfigured to provide the desired outer three-dimensional texture of theconcrete wall. Concrete 212 is poured into the re-usable molds 210 whichare then stacked on top of another. The stack 220 is then capable ofbeing stored and/or transported away from a manufacturing facility so asto increase production capacity thereof. The concrete 212 is allowed tocure in the molds 210, for example, while the molds 210 are beingtransported to a destination site. Once the concrete 212 cures, the mold210 may then be removed from the now formed concrete wall 212 and bereused. The concrete wall 212 may then be painted or however decoratedfor aesthetics and then be put to use.

As shown in FIG. 9, a preferred method 300 of manufacturing verticalconcrete structures is provided. The method 300 comprises the step 310of providing a portable mold having an inner surface contoured with atexture desired for an outer surface of a concrete wall. In step 320,concrete is poured into the portable mold, which preferably comprisesplastic, such as vinyl. The concrete may be poured into the portablemold at a facility, such as a manufacturing plant. The concrete is curedin the portable mold in step 330. In this step, the concrete may becured in the portable mold away from the facility, e.g., while intransport to a destination. Step 340 comprises removing the portablemold from the concrete. This step may include removing the portable moldfrom the concrete at the destination. The method 300 may furthercomprise the step 350 of transporting the portable mold with the pouredconcrete to a destination while the concrete is curing in the portablemold, step 360 of attaching a layer of foam to the concrete in theportable mold and step 370 of re-using the portable mold.

It will be appreciated that unlike conventional techniques formanufacturing vertical concrete structures which generally occur insidea manufacturing facility, the curing process for the vertical concretestructures, such as walls, can now take place entirely outside thefacility, thereby enabling a radical increase in production capacity.According to the invention, facilities no longer need to reserve spaceand time to allow for the curing process.

Furthermore, the vertical concrete walls may be formed with anappropriate mold such that the end product comprises a three-dimensionaltexture having an appearance other than concrete. For example, in FIG.10, the concrete wall 410 may be formed to include a three-dimensionaltexture resembling a random assortment of stones to create a flagstoneor cobblestone effect. In FIG. 11, the concrete wall 420 may be formedto include a three-dimensional texture resembling rectangular or squaretiles in a diagonal pattern so as to resemble, for example, marble,granite, or stone tiles. The walls in FIGS. 10 and 11 may be furtherrefined by chiseling and/or coloring so that the end result resembles ahigh end, expensive product.

Many alterations and modifications may be made by those having ordinaryskill in the art without departing from the spirit and scope of theinvention. Therefore, it must be understood that the illustratedembodiments have been set forth only for the purposes of examples andthat they should not be taken as limiting the invention as defined bythe following claims. For example, notwithstanding the fact that theelements of a claim are set forth below in a certain combination, itmust be expressly understood that the invention includes othercombinations of fewer, more or different elements, which are disclosedin above even when not initially claimed in such combinations.

The words used in this specification to describe the invention and itsvarious embodiments are to be understood not only in the sense of theircommonly defined meanings, but to include by special definition in thisspecification the generic structure, material or acts of which theyrepresent a single species.

The definitions of the words or elements of the following claims are,therefore, defined in this specification to not only include thecombination of elements which are literally set forth. In this sense itis therefore contemplated that an equivalent substitution of two or moreelements may be made for any one of the elements in the claims below orthat a single element may be substituted for two or more elements in aclaim. Although elements may be described above as acting in certaincombinations and even initially claimed as such, it is to be expresslyunderstood that one or more elements from a claimed combination can insome cases be excised from the combination and that the claimedcombination may be directed to a subcombination or variation of asubcombination.

Insubstantial changes from the claimed subject matter as viewed by aperson with ordinary skill in the art, now known or later devised, areexpressly contemplated as being equivalently within the scope of theclaims. Therefore, obvious substitutions now or later known to one withordinary skill in the art are defined to be within the scope of thedefined elements.

The claims are thus to be understood to include what is specificallyillustrated and described above, what is conceptionally equivalent, whatcan be obviously substituted and also what incorporates the essentialidea of the invention.

1-33. (canceled)
 34. An outdoor wall assembly, comprising: a first wallpanel including: a first plastic sheet having a first outer surface anda first inner surface, the first outer surface comprising a firstthree-dimensional texture, the first inner surface being substantiallyparallel to the first outer surface; a second plastic sheet having asecond outer surface and a second inner surface, the second outersurface comprising a second three-dimensional texture, the second innersurface being substantially parallel to the second outer surface, thesecond plastic sheet being disposed in a back-to-back relationship withthe first plastic sheet such that the second inner surface faces thefirst inner surface; a first filler material disposed between the firstplastic sheet and the second plastic sheet; and a second wall panelcoupled to the first wall panel in a side-by-side arrangement, thesecond wall panel including: a third plastic sheet having a third outersurface and a third inner surface, the third outer surface comprising athird three-dimensional texture, the third inner surface beingsubstantially parallel to the third outer surface; a fourth plasticsheet having a fourth outer surface and a fourth inner surface, thefourth outer surface comprising a fourth three-dimensional texture, thefourth inner surface being substantially parallel to the fourth outersurface, the fourth plastic sheet being disposed in a back-to-backrelationship with the third plastic sheet such that the fourth innersurface faces the third inner surface; and a second filler materialdisposed between the third plastic sheet and the fourth plastic sheet.35. The assembly of claim 34, further comprising a side rail interposedbetween the first wall panel and the second wall panel.
 36. The assemblyof claim 35, wherein the side rail comprises at least one U-channel. 37.The assembly of claim 34, wherein: the first wall panel furthercomprises a first top rail and a first bottom rail; and the second wallpanel further comprises a second top rail and a second bottom rail. 38.The assembly of claim 34, wherein the first top rail and the secondbottom rail are configured to removably mate with each other.
 39. Theassembly of claim 34, wherein the first filler material and the secondfiller material each comprises polyurethane.
 40. The assembly of claim34, wherein the first wall panel comprises: a first concrete layerdisposed between the first plastic sheet and the first filler material;and a second concrete layer disposed between second plastic sheet andthe first filler material.
 41. The assembly of claim 40, wherein thesecond wall panel comprises: a third concrete layer disposed between thethird plastic sheet and the second filler material; and a fourthconcrete layer disposed between fourth plastic sheet and the secondfiller material.
 42. The assembly of claim 40, wherein the first fillermaterial and the second filler material each comprises a foam material.43. The assembly of claim 34, wherein the first plastic sheet, thesecond plastic sheet, the third plastic sheet and the fourth plasticsheet comprise vinyl.
 44. An outdoor wall assembly, comprising: a firstwall panel including: a first plastic sheet having a first outer surfaceand a first inner surface, the first outer surface comprising a firstthree-dimensional texture; a second plastic sheet having a second outersurface and a second inner surface, the second outer surface comprisinga second three-dimensional texture, the second plastic sheet beingdisposed in a back-to-back relationship with the first plastic sheetsuch that the second inner surface faces the first inner surface; afirst filler material disposed between the first plastic sheet and thesecond plastic sheet; and a second wall panel coupled to the first wallpanel in a side-by-side arrangement, the second wall panel including: athird plastic sheet having a third outer surface and a third innersurface, the third outer surface comprising a third three-dimensionaltexture; a fourth plastic sheet having a fourth outer surface and afourth inner surface, the fourth outer surface comprising a fourththree-dimensional texture, the fourth plastic sheet being disposed in aback-to-back relationship with the third plastic sheet such that thefourth inner surface faces the third inner surface; and a second fillermaterial disposed between the third plastic sheet and the fourth plasticsheet.
 45. The assembly of claim 44, wherein: the first inner surface issubstantially parallel to the first outer surface; the second innersurface is substantially parallel to the second outer surface; the thirdinner surface is substantially parallel to the third outer surface; andthe fourth inner surface is substantially parallel to the fourth outersurface.
 46. The assembly of claim 44, further comprising a side railinterposed between the first wall panel and the second wall panel. 47.The assembly of claim 46, wherein the side rail comprises a U-channel.48. The assembly of claim 46, wherein the side rail comprises a pair ofopposing U-channels.
 49. The assembly of claim 44, wherein: the firstwall panel further comprises a first top rail and a first bottom rail;and the second wall panel further comprises a second top rail and asecond bottom rail.
 50. The assembly of claim 44, wherein the first toprail and the second bottom rail are configured to removably mate witheach other.
 51. The assembly of claim 44, wherein the first fillermaterial and the second filler material each comprises polyurethane. 52.The assembly of claim 44, wherein the first wall panel comprises: afirst concrete layer disposed between the first plastic sheet and thefirst filler material; and a second concrete layer disposed betweensecond plastic sheet and the first filler material.
 53. The assembly ofclaim 52, wherein the second wall panel comprises: a third concretelayer disposed between the third plastic sheet and the second fillermaterial; and a fourth concrete layer disposed between fourth plasticsheet and the second filler material.
 54. The assembly of claim 44,wherein the first filler material and the second filler material eachcomprises a foam material.
 55. The assembly of claim 44, wherein thefirst plastic sheet, the second plastic sheet, the third plastic sheetand the fourth plastic sheet comprise vinyl.